青天井 あおてんじょう Meanings Noun blue sky skyrocketing (of prices); having no limit; the sky being the limit Kanji 青 blue. Read as あお. 天 heaven. Read as テン. 井 well. Read as ショウ. Words containing 青天井 青天井予算 (あおてんじょうよさん) limitless budget Jinuma: Japanese Dictionary · Word lists